package com.webserver.core;

import com.webserver.http.HttpServerRequest;

import java.io.*;
import java.net.Socket;
import java.security.cert.PKIXCertPathValidatorResult;
import java.util.HashMap;
import java.util.Map;

/**
 * 线程任务
 * 负责与特定的客户端进行HTTP交互。
 */
public class ClientHandler implements Runnable {
    private Socket socket;

    public ClientHandler(Socket socket) {
        this.socket = socket;
    }

    @Override
    public void run() {
        try {
            //http://localhost:8088/
            //1解析请求
            HttpServerRequest request=new HttpServerRequest(socket);

            //2处理请求
            String path =request.getUri();
            //3发送响应
            //将./webapps/myweb/index.html响应给浏览器
            File file = new File("./webapps"+path);
            /*
               HTTP/1.1 200 OK(CRLF)
               Content-Type: text/html(CRLF)
               Content-Length: 2546(CRLF)(CRLF)
               1011101010101010101......
             */
            OutputStream out =socket.getOutputStream();
            //3.1发送状态行
            String line="HTTP/1.1 200 OK";
            byte[] data=line.getBytes("ISO8859-1");
            out.write(data);
            out.write(13);
            out.write(10);

            line="Content-Type: text/html";
            data=line.getBytes("ISO8859-1");
            out.write(data);
            out.write(13);
            out.write(10);

            //3.2发送响应头
            line="Content-Length:"+file.length();
            data=line.getBytes("ISO8859-1");
            out.write(data);
            out.write(13);
            out.write(10);

            //单独发送CRLF表示响应头部分发送完毕
            out.write(13);
            out.write(10);

            //3.3发送响应正文
            FileInputStream fis =new FileInputStream(file);
            int len;
            byte[] buf =new byte[1024*10];
            while ((len=fis.read(buf))!=-1){
                out.write(buf,0,len);
            }
            System.out.println("响应发送完毕");


        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                socket.close(); //响应后断开连接
            } catch (IOException e) {

            }
        }
    }

}
